Hi folks. Ive made a couple of posts here in recent weeks about my sad looking St. Augustine lawn. I had sent off for a soil test before finding you all, and I finally got the results back today (done at Texas A&M University).
Of most concern to me in the results is my soil's pH. While IÂve applied chemical fertilizers like ScottÂs in the past, IÂve never applied anything else (like lime for example). Somehow or other, my pH came back as 8.8.
Sulfur, iron sulfate, or aluminum sulfate seem to be the weapons of choice, but IÂm getting the impression that lowering pH this much is close to impractical. IÂve found a chart that says to drop pH by one point you need to apply sulfur at 24 lbs / 1000 sqft, and to multiply that application rate by 6 if you wanted to use quicker-acting iron or aluminum sulfate.
It sounds like I have a good chance of burning the lawn (and any microbes if I even have any!) with any of these.
Anyone been faced with a similar situation?